"Last year, the world’s record for the lowest solar PV tariff was also outcompeted several times, with Portugal still holding the world’s cheapest tariff of $0.01316/kWh. Meanwhile, Abu Dhabi followed neck and neck, as the authorities awarded a tariff of $0.0135/kWh. Also, Qatar later followed closely with a tariff rate of $0.01567/kWh."

https://www.pv-magazine.com/2021/01/23/the-weekend-read-the-recent-evolution-of-solar-pv-energy-costs/